This is my first amplifier project and it's one of the most cool thing I've ever built. Unfortunately there is no sound from the left channel. All tubes lights up and seems ok in the dark.
Component list:
PT: Hammond 374BX
OT: Hammond 1628SEA
Choke: Hammond 193H
Auxilliary cap: Temco 100 uf
Tubes: 12AT7 Electro Harmonix, Sovtek 5AR4, EL34 Electro Harmonix
I took some voltage measures:
B+: 450 vdc
R17: 32
R27: 33
R10: 0
R20 0
I thought the problem was my potentiometer so I removed it: no change. I've redone all soldering on both side. I took basic triode wiring for my amplifier. D3,D4 TR1 are jumpered. The problem seems in the preamp section... I'm facing a wall, any advice ?
Component list:
PT: Hammond 374BX
OT: Hammond 1628SEA
Choke: Hammond 193H
Auxilliary cap: Temco 100 uf
Tubes: 12AT7 Electro Harmonix, Sovtek 5AR4, EL34 Electro Harmonix
I took some voltage measures:
B+: 450 vdc
R17: 32
R27: 33
R10: 0
R20 0
I thought the problem was my potentiometer so I removed it: no change. I've redone all soldering on both side. I took basic triode wiring for my amplifier. D3,D4 TR1 are jumpered. The problem seems in the preamp section... I'm facing a wall, any advice ?